sci13112a

The Gemini North enclosure (left) shown with the crane used for the recent installation of the service platform. This platform will be necessary to make repairs to the failed shutter bearing. Inset shows a closeup of the shutter bearing assembly with the skewed assembly (aqua, at bottom). Because access to the assembly is not possible when installed on the dome, this entire assembly, weighing about 4200 pounds, must be removed and will require the use of the same crane used to install the service platform.